ALEXANDRIA, Va., July 23 -- United States Patent no. 12,365,554, issued on July 22, was assigned to Zhejiang Libiao Robots Co. Ltd. (Zhejiang, China).

"Dual power driving-based parallel movable shelf and unloading apparatus thereof" was invented by Jianqiang Zhu (Zhejiang, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are a dual power driving-based parallel movable shelf and an unloading apparatus thereof. The parallel movable shelf comprises: an upper transverse rod, an upper sliding block and an upper power driving apparatus being fixed on the upper transverse rod, and the upper power driving apparatus being able to control the upper sliding block to move back and forth only along the uppe...